I am using X-Functions, and want to use user defined classes within. The header files (.h) and source files (.cpp) of my user defined classes are stored in path %OriginUserFolder\OriginC Now, when I want to use the classes I have to copy the header files also into path %OriginUserFolder\OriginC\X-Functions ...why? Is there another way to organize the files? Because for now I allways have to copy the files to the X-Functions folder after changing a file. I am afraid of mixing older and newer versions of my files.